Frost & freeze potential in the upper Midwest

Frost & freeze potential in the upper Midwest

On the Plains, hot weather has returned to Texas and neighboring areas. This year’s wildfires have charred nearly 3.7 million acres in Texas, more than 2% of the state’s area. Nearly all of the rangeland and pastures are rated very poor to poor in Texas (96%) and Oklahoma (93%). Farther north, isolated showers are developing across the central Plains in the vicinity of a cold front, while very cool air is settling across the northern Plains.

Across the Corn Belt, warmth lingers across the Ohio Valley, but much cooler air is arriving elsewhere.

In the South, very warm, dry weather is promoting summer crop maturation and harvesting.

In the West, showers continue in the Four Corners States, while warm, dry weather prevails in the Northwest. The Northwestern spring wheat harvest is nearing completion, while Washington leads the nation with 30% of its winter wheat planted.

A Freeze Watch is in effect for much of the upper Midwest. On Wednesday morning, a freeze (temperatures of 32° or below) should be expected on the northern Plains, particularly in North Dakota. By Thursday morning, a freeze will cover much of the upper Midwest, including North Dakota, Minnesota, eastern South Dakota, northern Iowa, and parts of Wisconsin. On Friday morning, frosty conditions should occur from Wisconsin to interior New England.

In the northern Corn Belt, from North Dakota to Michigan, the amount of corn dented on September 11 ranged from 61 to 83%, while full maturity ranged from 6 to 10%. Similarly, the portion of soybeans with lower leaves yellowing ranged from 31 to 48%, while soybeans dropping leaves ranged from 6 to 13%.

By week’s end, cool air will cover the eastern half of the U.S., while warmth will linger in the Northwest and return to the northern High Plains.

During the next several days, showery weather will continue in the Southwest, while some beneficial rain will dampen portions of the central and southern Plains and the Mid-South.

Looking ahead, the 6- to 10-day outlook calls for near- to above-normal temperatures nationwide, except for cooler-than-normal conditions in the Southeast. Meanwhile, near- to below-normal precipitation across the majority of the U.S. will contrast with drier-than-normal weather in western Washington, along the southern Atlantic Coast, and from the central Plains into the upper Midwest.
 

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